diff --git a/src/components/calendar/Calendar.vue b/src/components/calendar/Calendar.vue
index cfa3d3277..05c8c3d72 100755
--- a/src/components/calendar/Calendar.vue
+++ b/src/components/calendar/Calendar.vue
@@ -2001,7 +2001,7 @@ export default {
         },
         panelStyleClass() {
             return [
-                'p-datepicker p-component',
+                'p-datepicker p-component', this.panelClass,
                 {
                     'p-datepicker-inline': this.inline,
                     'p-disabled': this.$attrs.disabled,